Electronic devices and operating methods of electronic devices

ABSTRACT

An electronic device includes a display panel that includes a first region including first pixel groups and a second region including second pixel groups, and a compensation circuit. The compensation circuit may receive first image data. The compensation circuit may compensate to generate second image data in response to a determination that the first image data corresponds to at least one of one or more particular first pixel groups that are adjacent to a boundary between the first region and the second region or one or more particular second pixel groups that are adjacent to the boundary. The compensation circuit outputs the second image data to the display panel.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. application Ser. No.17/212,286, filed on Mar. 25, 2021, which claims priority under 35U.S.C. § 119 to Korean Patent Application No. 10-2020-0101949 filed onAug. 13, 2020, in the Korean Intellectual Property Office, thedisclosure of each of which are incorporated by reference herein intheir entirety.

BACKGROUND

Example embodiments of the inventive concepts described herein relate torelate to electronic devices, and more particularly, relate toelectronic devices improving an image quality of display panelsincluding heterogeneous pixel patterns and an operating method of theelectronic devices.

Mobile devices such as a smartphone and a smart pad may include camerasfor capturing image data. At least one camera may be disposed on a backsurface of a mobile device, and at least one camera may be disposed on afront surface of the mobile device.

The mobile device may display an image to a user through a display paneldisposed on the front surface. Both the camera and the display panel aredisposed on the front surface of the mobile device. In this case, aspace that the camera occupies and a space that the display paneloccupies may compete with each other.

To maximize a size of an image to be displayed through the display panelwith the space for the camera minimized, combinations of various typesof display panels such as a display panel providing a camera space inthe form of water drop and a display panel providing a camera space inthe form of a punching hole have been attempted.

SUMMARY

Some example embodiments of the inventive concepts provide an electronicdevice improving an image quality of a display panel including a firstregion for displaying image data and a second region for displayingimage data and also providing transparency allowing a light for a camerato be transmitted and an operating method of the electronic device.

According to some example embodiments, an electronic device includes adisplay panel that includes a first region including first pixel groupsand a second region including second pixel groups, and a compensationcircuit. The compensation circuit may receive first image data. Thecompensation circuit may compensate the first image data to generatesecond image data in response to a determination that the first imagedata corresponds to at least one of one or more particular first pixelgroups that are adjacent to a boundary between the first region and thesecond region, or one or more particular second pixel groups that areadjacent to the boundary. The compensation circuit may output the secondimage data to the display panel.

According to some example embodiments, an electronic device includes adisplay panel that includes a first region including first pixel groupsand a second region including second pixel groups, and a compensationcircuit. The compensation circuit may receive first image data. Thecompensation circuit may compensate the first image data to generatesecond image data in response to a determination that the first imagedata corresponds to at least one of one or more particular first pixelgroups that are adjacent to a boundary between the first region and thesecond region, or one or more particular second pixel groups that areadjacent to the boundary. The compensation circuit may output the secondimage data to the display panel. The boundary may include a firstboundary, a second boundary, a third boundary, and a fourth boundary. Inthe one or more particular second pixel groups adjacent to the boundary,a first pattern of second pixel groups adjacent to the first boundary, asecond pattern of second pixel groups adjacent to the second boundary, athird pattern of second pixel groups adjacent to the third boundary, anda fourth pattern of second pixel groups adjacent to the fourth boundaryare identical.

According to some example embodiments, an operating method of anelectronic device which includes a display panel includes displayingfirst image data corresponding to a first region of the display panelthrough one or more first pixel groups of the first region, performingcompensation of second image data corresponding to a second region ofthe display panel to generate third image data, and displaying the thirdimage data through one or more second pixel groups of the second region.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects and features of the inventive concepts willbecome apparent by describing in detail example embodiments thereof withreference to the accompanying drawings.

FIG. 1 illustrates an electronic device according to some exampleembodiments of the inventive concepts.

FIG. 2 illustrates a display panel in detail according to some exampleembodiments of the inventive concepts.

FIG. 3 illustrates an example in which brightness of an image displayedthrough first pixel groups and brightness of the image displayed throughsecond pixel groups are different at a boundary between a first regionand a second region with regard to the same gray level according to someexample embodiments of the inventive concepts.

FIG. 4 illustrates first pixel groups, second pixel groups, and holes ofa first region and a second region in detail according to some exampleembodiments of the inventive concepts.

FIG. 5 illustrates pixels adjacent to a boundary between a first regionand a second region of FIG. 4 according to some example embodiments ofthe inventive concepts.

FIG. 6 illustrates a compensation device according to some exampleembodiments of the inventive concepts.

FIG. 7 illustrates an operating method of a compensation deviceaccording to some example embodiments of the inventive concepts.

FIG. 8 is a block diagram illustrating a display device according tosome example embodiments of the inventive concepts.

FIG. 9 is a circuit diagram illustrating a pixel according to someexample embodiments of the inventive concepts.

FIG. 10 illustrates an example in which a compensation device performscompensation by using sensing data according to some example embodimentsof the inventive concepts.

FIG. 11 illustrates an example in which a compensation device performscompensation based on information of image data according to someexample embodiments of the inventive concepts.

FIG. 12 illustrates a display panel according to some exampleembodiments.

FIG. 13 illustrates a display panel according to some exampleembodiments.

FIG. 14 is a block diagram illustrating an electronic device accordingto some example embodiments of the inventive concepts.

DETAILED DESCRIPTION

Below, some example embodiments of the inventive concepts may bedescribed in detail and clearly to such an extent that an ordinary onein the art easily implements the inventive concepts.

FIG. 1 illustrates an electronic device 100 according to some exampleembodiments of the inventive concepts. Referring to FIG. 1 , theelectronic device 100 may be a mobile device such as a smartphone or asmart pad. The electronic device 100 may include a body 110 and adisplay panel 120. The body 110 may execute an operating system andvarious applications and may output image data to the display panel 120to display an image through the display panel 120.

The display panel 120 includes an array of pixels 128 configured todisplay an image and may include a first region 121 of pixels and asecond region 122 of pixels. The first region 121 may include firstpixels 121 a configured to display an image. The second region 122 mayinclude second pixels 122 a configured to display an image. The firstand second pixels 121 a and 122 a may be configured to display separateparts of a same, single image. Distinct features of the second pixels122 a of the second region 122 may be different from distinct featuresof the first pixels 121 a of the first region 121. For example, at leastone of a placement (or layout), a size, or a brightness of the firstpixels 121 a of the first region 121 may be different from at least oneof a placement (or layout), a size, or brightness of the second pixels122 a of the second region 122.

The second region 122 may have transparency (e.g., transmittance, whichmay be a ratio of light transmitted through the second region 122 toincident light that is incident on the second region 122) allowing alight (e.g. incident light on the display panel 120 from an exterior ofthe electronic device 100) to be transmitted through the second region122. A camera 190 (which may include an image sensor, including a CMOSimage sensor device) configured to capture image data (e.g., third imagedata) may be provided under the second region 122. In particular, thecamera 190 may be located in the electronic device 100 such that thedisplay panel 120 is between the camera 190 and an exterior of theelectronic device 100, and the camera 190 may capture an image of ascene exterior to the electronic device 100 (e.g., third image data)based on receiving and/or detecting light that is incident on the secondregion 122 and passes through the second region 122 to be transmittedthrough the second region 122 to be incident on the camera 190. Thus thecamera 190 may be understood to capture image data through the secondregion 122. That is, the electronic device 100 may be implemented anunder display camera (UDC). The transparency of the second region may behigher than the transparency of the first region 121 (e.g., the secondregion 122 may have transmittance between about 70% to about 90%, whilethe first region 121 may have transmittance between about 10% to about60%).

FIG. 2 illustrates the display panel 120 in detail. Referring to FIGS. 1and 2 , the first region 121 of the display panel 120 may include firstpixel groups PG1. The first pixel groups PG1 may include first pixels121 a configured to display an image based on image data.

The second region 122 of the display panel 120 may include second pixelgroups PG2. The second pixel groups PG2 may include second pixels 122 aconfigured to display an image based on image data. In FIG. 2 , aboundary 123 between the first region 121 and the second region 122 ismarked by a dashed line. In some example embodiments, the boundary 123between the first region 121 and the second region 122 may be in theform of a quadrangle including a first boundary (or a left side), asecond boundary (or a top side), a third boundary (or a right side), anda fourth boundary (or a bottom side).

In the first region 121, the first pixel groups PG1 may be arranged atregular intervals. In the second region 122, the second pixel groups PG2may be arranged at regular intervals. A distance between the secondpixel groups PG2 of the second region 122 may be greater than a distancebetween the first pixel groups PG1 of the first region 121. That is, thedensity of the second pixel groups PG2 of the second region 122 may belower than the density of the first pixel groups PG1 of the first region121. Restated, a placement density of the first pixel groups PG1 of thefirst region 121 (e.g., density of first pixel groups PG1 in the firstregion 121) may be higher (e.g., greater) than a placement density ofthe second pixel groups PG2 of the second region 122 (e.g., density ofsecond pixel groups PG2 in the second region 122)

Holes “H” may be provided in the second region 122, and each of theholes “H” may correspond to a size of each of the second pixel groupsPG2 (or may have the size of each of the second pixel groups PG2).Pixels may not be provided in the holes “H”, and the holes “H” may formspaces providing transparency to the second region 122. That is, a lightmay pass through the holes “H” of the second region 122, thereby beingtransmitted through the second region 122, and may then be transferredto a camera 190 under the display panel 120.

Each of the first pixel groups PG1 or each of the second pixel groupsPG2 may include two or more pixels. Accordingly, it will be understoodthat the display panel 120 may include a first region of pixels (e.g.,first region 121) that includes one or more (e.g., a plurality of) firstpixel groups PG1 and a second region of pixels (e.g., second region 122)that includes one or more (e.g., a plurality of) second pixel groupsPG2, where each first pixel group PG1 includes two or more first pixels121 a of the first region 121 and each second pixel group PG2 includestwo or more second pixels 122 a of the second region. Lights emittedfrom the two or more pixels in each of the first pixel groups PG1 oreach of the second pixel groups PG2 may be combined to display aspecific color that image data indicate. Each of the first pixel groupsPG1 or each of the second pixel groups PG2 may be a set of pixelsconfigured to display a specific color.

To make the transparency (e.g., transmittance) of the second region 122high (e.g., about 70% to about 90% transmittance), for example higherthan a transparency of the first region 121 (e.g., a transmittance ofabout 10% to about 60%), a distance between adjacent second pixels 122 aof the second pixel groups PG2 may be smaller than a distance betweenadjacent first pixels 121 a of the first pixel groups PG1. Also, to makethe transparency of the second region 122 high (e.g., higher than thetransparency of the first region 121), a part (e.g., a polarizing layer)of layers provided in the first region 121 may not be provided in (e.g.,may be absent from) the second region 122.

The placement (or distribution) density of the first pixel groups PG1 inthe first region 121 may be higher than the placement (or distribution)density of the second pixel groups PG2 in the second region 122. Forexample, the placement (or distribution) density of the first pixelgroups PG1 in the first region 121 may correspond to a pixel density, ofthe first pixels 121 a in the first region 121, of 96 pixels per inch(ppi) and the placement (or distribution) density of the second pixelgroups PG2 in the second region 122 may correspond to a pixel density,of the second pixels 122 a in the second region 122, of 40 pixels perinch (ppi). Accordingly, when the first pixel groups PG1 and the secondpixel groups PG2 have the same brightness with regard to the same graylevel, an image displayed by the second pixel groups PG2 of the secondregion 122 may be darker than an image displayed by the first pixelgroups PG1 of the first region 121.

To prevent this phenomenon, with regard to the same gray level, thesecond pixel groups PG2 may be configured to display an image to bebrighter than the first pixel groups PG1. Restated, when image data of asame gray level is input to be displayed by the first and second pixelgroups PG1 and PG2, a brightness of light emitted by the second pixels122 a may be higher than a brightness of light emitted by the firstpixels 121 a so that the first pixels and second pixels collectivelydisplay an image having a same gray level across the first and secondregions 121 and 122. Further restated, the second pixels 122 a of one ormore second pixel groups PG2 may be configured to emit light at a higherbrightness than light emitted by the first pixels 121 a of the one ormore first pixel groups PG1 to cause said first and second pixel groupsPG1 to display an image having a same gray level across the said firstand second regions 121 and 122. For example, sizes of the pixels of thesecond pixel groups PG2 may be larger than sizes of the pixels of thefirst pixel groups PG1.

In some example embodiments, a hole group HG may be assumed. The holegroup HG may be a space associated with one second pixel group PG2. Withregard to the same gray level, the first pixel groups PG1 and the secondpixel groups PG2 may be configured and controlled such that brightnessof the first pixel groups PG1 included in the size (or area) of one holegroup HG is identical (or similar) to brightness of the second pixelgroup PG2 included in the size (or area) of one hole group HG.

As illustrated in FIG. 2 , four first pixel groups PG1 may be includedin the size (or area) of one hole group HG. In this case, assuming thatbrightness of one second pixel group PG2 is “1”, with regard to the samegray level, the first pixel groups PG1 may be configured and controlledsuch that brightness of one first pixel group PG1 is 0.25.

Accordingly, a total of brightness of the first pixel groups PG1included in the size of one hole group HG may be “1”, and a total ofbrightness of the second pixel group PG2 included in the size of onehole group HG may be “1”. That is, with regard to the same gray level,brightness of an image displayed by the second pixel groups PG2 of thesecond region 122 may be identical to brightness of the image displayedby the first pixel groups PG1 of the first region 121.

FIG. 3 illustrates an example in which brightness of an image displayedthrough the first pixel groups PG1 and brightness of the image displayedthrough the second pixel groups PG2 are different at the boundary 123between the first region 121 and the second region 122 with regard tothe same gray level. To prevent a drawing from being complicated, someof reference signs illustrated in FIG. 2 will be omitted in FIG. 3 . Afirst block B1, a second block B2, a third block B3, a fourth block B4,a fifth block B5, and a sixth block B6 illustrated in FIG. 3 may have asize corresponding to one hole group HG. Blocks may herein beinterchangeably referred to as “regions.”

Referring to FIGS. 1, 2, and 3 , the first block B1 includes four firstpixel groups PG1. Accordingly, brightness of an image that the firstpixel groups PG1 of the first block B1 display with regard to the samegray level may be “1”. Brightness of the first block B1 may be generalbrightness of the first pixel groups PG1 included in the size (or area)of one hole group HG.

The second block B2 includes one second pixel group PG2. Accordingly,brightness of an image that the second pixel group PG2 of the secondblock B2 display with regard to the same gray level may be “1”.Brightness of the second block B2 may be general brightness of thesecond pixel groups PG2 belonging to the size of one hole group HG. Thebrightness of the second block B2 may be identical to the brightness ofthe first block B1.

The third block B3 may include the boundary 123 between the first region121 and the second region 122. The third block B3 may include two firstpixel groups PG1. Brightness of an image that the first pixel groups PG1of the third block B3 display with regard to the same gray level may be“0.5”.

The fourth block B4 may include the boundary 123 between the firstregion 121 and the second region 122. The fourth block B4 may includethree first pixel groups PG1. Brightness of an image that the firstpixel groups PG1 of the fourth block B4 display with regard to the samegray level may be “0.75”.

The fifth block B5 may include the boundary 123 between the first region121 and the second region 122. The fifth block B5 may include two firstpixel groups PG1 and one second pixel group PG2. Brightness of an imagethat the first pixel groups PG1 and the second pixel group PG2 of thefifth block B5 display with regard to the same gray level may be “1.5”.

The sixth block B6 may include the boundary 123 between the first region121 and the second region 122. The sixth block B6 may include threefirst pixel groups PG1 and one second pixel group PG2. Brightness of animage that the first pixel groups PG1 and the second pixel group PG2 ofthe sixth block B6 display with regard to the same gray level may be“1.75”.

As illustrated in FIG. 3 , in the same region, brightness associatedwith the same gray level may be differently expressed at the boundary123 between the first region 121 and the second region 122. This maycause the unintended reduction of an image quality at the boundary 123between the first region 121 and the second region 122.

FIG. 4 illustrates the first pixel groups PG1, the second pixel groupsPG2, and the holes “H” of the first region 121 and the second region 122in detail. In some example embodiments, it is assumed that the firstpixel groups PG1 and the second pixel groups PG2 include pixels providedbased on a pentile structure. However, the inventive concepts is notlimited to the pentile structure. The inventive concepts may be appliedto pixels that are provided in various patterns such as an RGB pattern.

As shown in FIG. 4 , each of the first pixel groups PG1 and the secondpixel groups PG2 may include first color pixels (e.g., blue pixels)marked by a relatively large quadrangle being empty, second color pixels(e.g., red pixels) marked by a relatively large quadrangle filled with aslash, and third color pixels (e.g., green pixels) marked by arelatively small quadrangle being empty.

For a brief description, sizes and placements of pixels of the firstpixel groups PG1 and pixels of the second pixel groups PG2 may beillustrated as identical, but the sizes and placements of the pixels ofthe first pixel groups PG1 may be different from the sizes andplacements of the pixels of the second pixel groups PG2. For example,the sizes of the pixels of the second pixel groups PG2 may be largerthan the sizes of the pixels of the first pixel groups PG1. Intervals bywhich the pixels of the second pixel groups PG2 are spaced from eachother may be smaller than intervals by which the pixels of the firstpixel groups PG1 are spaced from each other.

The holes “H” are illustrated to be similar to the second pixel groupsPG2. In the holes “H”, portions corresponding to the pixels of thesecond pixel groups PG2 are filled with black dots. The portions filledwith black dots may be regarded as portions in which componentscorresponding to pixels are not provided and which make the transparency(e.g., transmittance) of the second region 122 high (e.g., higher thanthe transmittance of the first region 121) and may be hereinafterreferred to as “pixel holes”.

FIG. 5 illustrates pixels adjacent to a boundary 123 between the firstregion 121 and the second region 122 of FIG. 4 . To prevent a drawingfrom being complicated, some of the components illustrated in FIG. 4will be omitted in FIG. 5 .

Referring to FIGS. 4 and 5 , a seventh block B7 shows pixels adjacent tothe first boundary 123 a (i.e., the left side) between the first region121 and the second region 122. Referring to the seventh block B7, thethird color pixels 121 a-3 (i.e., the green pixels) of the first pixelgroups PG1 of the first region 121 and the pixel holes H-1 of the holes“H” of the second region 122 may be adjacent to each other, such thatthere are no interposing pixels between said adjacent pixels. The pixelholes H-1 do not (e.g., are configured to not) emit a light.Accordingly, in the seventh block B7, a light emitted from the thirdcolor pixels 121 a-3 may not be combined with other lights of the firstcolor and the second color due to the pixel holes H-1 emitting no light,and an unintended line of a third color may be displayed along the firstboundary 123 a (i.e., the left side).

Referring to an eighth block B8, the third color pixels 121 a-3 (i.e.,the green pixels) of the first pixel groups PG1 of the first region 121and the pixel holes H-1 of the holes “H” of the second region 122 may beadjacent to each other. The pixel holes H-1 do not emit a light.Accordingly, in the eighth block B8, a light emitted from the thirdcolor pixels 121 a-3 may not be combined with other lights of the firstcolor and the second color due to the pixel holes emitting no light, andan unintended line of the third color may be displayed along the secondboundary 123 b (i.e., the top side).

Referring to a ninth block B9, the first color pixels 121 a-1 (i.e., theblue pixels) and the second color pixels 121 a-2 (i.e., the red pixels)of the first pixel groups PG1 of the first region 121 and the pixelholes H-2 of the holes “H” of the second region 122 may be adjacent toeach other. The pixel holes do not emit a light. Accordingly, in theninth block B9, lights emitted from the first color pixels 121 a-1 andthe second color pixels 121 a-2 may not be combined with another lightof the third color due to the pixel holes H-2 emitting no light, and anunintended line of a color (i.e., magenta) corresponding to acombination of the first color (i.e., the blue color) and the secondcolor (i.e., the red color) may be displayed along the third boundary123 c (i.e., the right side).

Referring to a tenth block B10, the first color pixels 121 a-1 (i.e.,the blue pixels) and the second color pixels 121 a-2 (i.e., the redpixels) of the first pixel groups PG1 of the first region 121 and thepixel holes H-2 of the holes “H” of the second region 122 may beadjacent to each other. The pixel holes H-2 do not emit a light.Accordingly, in the tenth block B10, lights emitted from the first colorpixels 121 a-1 and the second color pixels 121 a-2 may not be combinedwith another light of the third color due to the pixel holes H-2emitting no light, and an unintended line of the color (i.e., magenta)corresponding to the combination of the first color (i.e., the bluecolor) and the second color (i.e., the red color) may be displayed alongthe fourth boundary 123 d (i.e., the bottom side).

As shown in FIG. 5 , the pixel groups PG1 and PG2 that include thepixels and/or pixel holes that are adjacent to one or more portions,sides, or the like of the boundary 123 may be understood to be pixelgroups that are adjacent to the boundary 123 such that no interposingpixel groups are between said adjacent pixel groups and the boundary123.

As described with reference to FIGS. 2 and 3 , brightness associatedwith the same gray level may be differently expressed on the sidesbetween the first region 121 and the second region 122. Also, asdescribed with reference to FIGS. 4 and 5 , unintended lines may bedisplayed at the boundary 123 (i.e., on the left, top, right, and bottomsides of the boundary 123) between the first region 121 and the secondregion 122. The electronic device 100 according to some exampleembodiments of the inventive concepts may perform compensation for imagedata corresponding to the boundary 123 between the first region 121 andthe second region 122 to prevent a brightness difference and anunintended line(s) from occurring at or near the boundary 123, therebyreducing or preventing reduction in image quality of images displayed atleast at the boundary 123 between the first and second regions 121 and122, thereby improving the display performance of the display panel 120while enabling the second region 122 to also provide sufficienttransparency to enable the under display camera (e.g., camera 190) underthe second region 122 to capture image data through the second region122, thereby improving the image capture and display performance of theelectronic device 100.

FIG. 6 illustrates a compensation device 200 according to some exampleembodiments of the inventive concepts. Referring to FIGS. 1 and 6 , thecompensation device 200 may be included in the electronic device 100.The compensation device 200 may include a compensation circuit 210 and amemory 220.

The electronic device 100, the compensation device 200, and/or anyportions thereof (including, without limitation, compensation circuit210 and/or memory 220) may include, may be included in, and/or may beimplemented by one or more instances of processing circuitry such ashardware including logic circuits; a hardware/software combination suchas a processor executing software; or a combination thereof. Forexample, the processing circuitry more specifically may include, but isnot limited to, a central processing unit (CPU), an arithmetic logicunit (ALU), a graphics processing unit (GPU), an application processor(AP), a digital signal processor (DSP), a microcomputer, a fieldprogrammable gate array (FPGA), and programmable logic unit, amicroprocessor, application-specific integrated circuit (ASIC), a neuralnetwork processing unit (NPU), an Electronic Control Unit (ECU), anImage Signal Processor (ISP), and the like. In some example embodiments,the processing circuitry may include a non-transitory computer readablestorage device, for example a solid state drive (e.g., memory 220),storing a program of instructions, and a processor configured to executethe program of instructions to implement the functionality and/ormethods performed by some or all of the electronic device 100 and/orcompensation device 200, including the functionality and/or methodsperformed by some or all of the compensation circuit 210 and/or memory220.

The memory 220 may include at least one of a volatile memory or anon-volatile memory. For instance, the non-volatile memory may includeread-only memory (ROM), flash memory, phase-change RAM (PRAM), magneticRAM (MRAM), resistive RAM (RRAM), and/or ferroelectric RAM (FRAM), andthe volatile memory may include static RAM (SRAM) and/or dynamic RAM(DRAM), but the inventive concepts are not limited thereto. In someexample embodiments, the memory 220 may include a hard disk drive (HDD)and/or a solid-state drive (SSD).

The compensation circuit 210 may receive first image data ID1 to bedisplayed through the display panel 120. The compensation circuit 210may determine that the first image data ID1 corresponds to a set of atleast one of 1) one or more particular first pixel groups PG1, of thefirst pixel groups PG1, that are adjacent to the boundary 123 betweenthe first region 121 and the second region 122, or 2) one or moreparticular second pixel groups PG2, of the second pixel groups PG2, thatare adjacent to the boundary 123 between the first region 121 and thesecond region 122, such that the first image data ID1 is determined tocorrespond to said boundary 123. In response to determining that thefirst image data ID1 corresponds to the boundary 123 between the firstregion 121 and the second region 122, the compensation circuit 210 mayperform compensation for the first image data ID1, also referred to ascompensating the first image data ID1 and/or processing the first imagedata ID1, to generate second image data ID2. In some exampleembodiments, the compensation circuit 210 may perform compensation for aportion of the first image data ID1 (e.g., partial pixel groups), whichcorresponds to the boundary 123 between the first region 121 and thesecond region 122. For example, the compensation circuit 210 maygenerate the second image data ID2 based on compensating the first imagedata ID1 such that a brightness of light emitted by first partial pixelgroups of one or more particular first pixel groups PG1 adjacent to theboundary 123 (e.g., first pixel groups PG1 in blocks B3 and/or B4)increases and a brightness of light emitted by second partial pixelgroups of the one or more particular first pixel groups PG1 adjacent tothe boundary 123 (e.g., first pixel groups PG1 in blocks B5 and/or B6)decreases. In another example, the compensation circuit may generate thesecond image data ID2 based on compensating the first image data ID1such that a brightness of light emitted by first partial pixel groups ofone or more particular second pixel groups PG2 adjacent to the boundary123 (e.g., second pixel groups PG2 in blocks B5 and/or B6) increases anda brightness of light emitted by second partial pixel groups of the oneor more particular second pixel groups PG2 adjacent to the boundary 123(e.g., second pixel groups PG2 in block B2) decreases.

First image data ID1 that corresponds to one or more particular pixelgroups that are adjacent to the boundary 123 may refer to first imagedata ID1 indicating light that is to be emitted by one or more pixels ofone or more pixel groups (e.g., first pixel group PG1 and/or secondpixel group PG2) that are adjacent to the boundary 123 as describedherein.

For example, the compensation circuit 210 may perform compensation basedon a compensation scheme stored in the memory 220. The memory 220 maystore compensation values for each of compensation units by which thecompensation for the boundary 123 between the first region 121 and thesecond region 122 is made. A compensation value may include a gain GN oran offset value (or a difference value) OFF associated with a gray levelof the first image data ID1. The compensation circuit 210 may applycompensation values to the first image data ID1 for each compensationunit and may generate second image data ID2. The second image data ID2may be transferred to the display panel 120 so as to be displayedthrough the display panel 120.

In some example embodiments, the memory 220 may store two or morecompensation schemes. The two or more compensation schemes may includedifferent compensation units, different compensation targets, ordifferent compensation values. One of the compensation schemes may beselected by a control signal from the outside (e.g., received fromexternal to the compensation device 200 and/or external to theelectronic device 100. The compensation circuit 210 may read theselected compensation scheme from the memory 220 and may performcompensation based on a compensation unit, a compensation target(s), anda compensation value(s) of the selected compensation scheme.

In some example embodiments, according to a first compensation scheme, asecond compensation scheme, and a third compensation scheme, acompensation unit may be a group. A group may include two or more pixelgroups. The memory 220 may store information about a compensation unitaccording to a location on the boundary between the first region 121 andthe second region 122, as information about the compensation unit. Forexample, the memory 220 may store information about locations of groupstargeted for compensation on the boundary.

According to the first compensation scheme, a compensation target may bethe first region 121. The memory 220 may store location information ofat least one group being a compensation target of the first region 121,which is adjacent to the boundary 123 between the first region 121 andthe second region 122. The at least one group may include two or morefirst pixel groups PG1. Also, the memory 220 may store at least one gainor offset value GN/OFF corresponding to the at least one group being thecompensation target. The compensation circuit 210 may apply the samegain or offset value GN/OFF to two or more first pixel groups PG1belonging to each group of the first region 121, which is adjacent tothe boundary 123.

According to the second compensation scheme, a compensation target maybe the second region 122. The memory 220 may store location informationof at least one group being a compensation target of the second region122, which is adjacent to the boundary 123 between the first region 121and the second region 122. The at least one group may include two ormore second pixel groups PG2. Also, the memory 220 may store at leastone gain or offset value GN/OFF corresponding to the at least one groupbeing the compensation target. The compensation circuit 210 may applythe same gain or offset value GN/OFF to two or more second pixel groupsPG2 belonging to each group of the second region 122, which is adjacentto the boundary.

According to the third compensation scheme, a compensation target may bethe first region 121 and the second region 122. The memory 220 may storelocation information of at least one group being a compensation targetof the first region 121 or the second region 122, which is adjacent tothe boundary between the first region 121 and the second region 122. Theat least one group may include two or more first pixel groups PG1, twoor more second pixel groups PG2, or at least one first pixel group PG1and at least one second pixel group PG2. Also, the memory 220 may storeat least one gain or offset value GN/OFF corresponding to the at leastone group being the compensation target. The compensation circuit 210may apply the same gain or offset value GN/OFF to the first pixelgroup(s) PG1 or the second pixel group(s) PG2 belonging to each group ofthe first region 121 or the second region 122, which is adjacent to theboundary.

For example, according to a fourth compensation scheme, a fifthcompensation scheme, and a sixth compensation scheme, a compensationunit may be a pixel group. The memory 220 may store information about acompensation unit according to a location on the boundary between thefirst region 121 and the second region 122, as information about thecompensation unit. For example, the memory 220 may store informationabout locations of pixel groups targeted for compensation on theboundary.

According to the fourth compensation scheme, a compensation target maybe the first region 121. The memory 220 may store information aboutlocations of the first pixel groups PG1 being a compensation target ofthe first region 121, which is adjacent to the boundary between thefirst region 121 and the second region 122. Also, the memory 220 maystore gains GN or offset values OFF corresponding to the first pixelgroups PG1 being the compensation target. The compensation circuit 210may apply the same gain or offset value GN/OFF to pixels belonging toeach of the first pixel groups PG1 adjacent to the boundary.

According to the fifth compensation scheme, a compensation target may bethe second region 122. The memory 220 may store information aboutlocations of the second pixel groups PG2 being a compensation target ofthe second region 122, which is adjacent to the boundary between thefirst region 121 and the second region 122. Also, the memory 220 maystore gains GN or offset values OFF corresponding to the second pixelgroups PG2 being the compensation target. The compensation circuit 210may apply the same gain or offset value GN/OFF to pixels belonging toeach of the second pixel groups PG2 adjacent to the boundary.

According to the sixth compensation scheme, a compensation target may bethe first region 121 and the second region 122. The memory 220 may storeinformation about locations of the first pixel groups PG1 being acompensation target of the first region 121 or the second pixel groupsPG2 being a compensation target of the second region 122, which isadjacent to the boundary between the first region 121 and the secondregion 122. Also, the memory 220 may store gains GN or offset values OFFcorresponding to the first pixel groups PG1 or the second pixel groupsPG2 being the compensation target. The compensation circuit 210 mayapply the same gain or offset value GN/OFF to pixels belonging to eachof the first pixel groups PG1 or the second pixel groups PG2 adjacent tothe boundary.

According to a seventh compensation scheme, an eighth compensationscheme, and a ninth compensation scheme, a compensation unit may be apixel. The memory 220 may store information about a compensation unitaccording to a location on the boundary between the first region 121 andthe second region 122, as information about the compensation unit. Forexample, the memory 220 may store information about locations of pixelstargeted for compensation on the boundary 123.

According to the seventh compensation scheme, a compensation target maybe the first region 121. The memory 220 may store information aboutlocations of the first pixels being a compensation target of the firstregion 121, which is adjacent to the boundary between the first region121 and the second region 122. Also, the memory 220 may store gains GNor offset values OFF corresponding to the first pixels being thecompensation target.

According to the eighth compensation scheme, a compensation target maybe the second region 122. The memory 220 may store information aboutlocations of the second pixels being a compensation target of the secondregion 122, which is adjacent to the boundary between the first region121 and the second region 122. Also, the memory 220 may store gains GNor offset values OFF corresponding to the second pixels being thecompensation target.

According to the ninth compensation scheme, a compensation target may bethe first region 121 and the second region 122. The memory 220 may storeinformation about locations of the first pixels being a compensationtarget of the first region 121, which is adjacent to the boundarybetween the first region 121 and the second region 122, or informationabout locations of the second pixels being a compensation target of thesecond region 122, which is adjacent to the boundary between the firstregion 121 and the second region 122. Also, the memory 220 may storegains GN or offset values OFF corresponding to the first pixels beingthe compensation target or the second pixels being the compensationtarget.

In some example embodiments, each of the seventh compensation scheme,the eighth compensation scheme, and the ninth compensation scheme mayinclude gains GN or offset values OFF according to colors of pixels. Forexample, each of the seventh compensation scheme, the eighthcompensation scheme, and the ninth compensation scheme may include gainsGN or offset values OFF according to colors of pixels (e.g., the firstpixels or the second pixels) adjacent to the boundary between the firstregion 121 and the second region 122. Accordingly, gains GN or offsetvalues OFF of pixels (e.g., the first pixels or the second pixels) ofdifferent colors, which are adjacent to the boundary between the firstregion 121 and the second region 122, may be different.

According to a tenth compensation scheme, an eleventh compensationscheme, and a twelfth compensation scheme, a compensation unit may be ahybrid. A compensation unit may be selected from a group, a pixel group,and a pixel depending on a location on the boundary between the firstregion 121 and the second region 122. For example, when the first pixelgroups PG1 and the second pixel groups PG2 adjacent to the boundary areuniformly arranged (or placed), a group may be selected as thecompensation unit. In some example embodiments, in the case of a centralportion of the first boundary, a central portion of the second boundary,a central portion of the third boundary, or a central portion of thefourth boundary, a group may be selected as the compensation unit.

For example, when the first pixel groups PG1 and the second pixel groupsPG2 adjacent to the boundary are not uniformly arranged (or placed), apixel group or a pixel may be selected as the compensation unit. In someexample embodiments, in the case of outer portions (or remainingportions other than the central portion) of the first boundary, outerportions of the second boundary, outer portions of the third boundary,or outer portions of the fourth boundary, a pixel group or a pixel maybe selected as the compensation unit.

The memory 220 may store information about a compensation unit accordingto a location on the boundary between the first region 121 and thesecond region 122, as information about the compensation unit. Forexample, the memory 220 may store location information of at least onegroup being a compensation target on the boundary, location informationof at least one pixel group being a compensation target on the boundary,or location information of at least one pixel being a compensationtarget on the boundary.

According to the tenth compensation scheme, a compensation target may bethe first region 121. The memory 220 may store information about alocation of at least one group, at least one first pixel group PG1, orat least one first pixel being a compensation target of the first region121, which is adjacent to the boundary between the first region 121 andthe second region 122. Also, the memory 220 may store at least one gainor offset value GN/OFF corresponding to at least one group being thecompensation target, at least one first pixel group PG1 being thecompensation target, or at least one first pixel being the compensationtarget.

According to the eleventh compensation scheme, a compensation target maybe the second region 122. The memory 220 may store information about alocation of at least one group, at least one second pixel group PG2, orat least one second pixel being a compensation target of the firstregion 121, which is adjacent to the boundary between the first region121 and the second region 122. Also, the memory 220 may store at leastone gain or offset value GN/OFF corresponding to at least one groupbeing the compensation target, at least one second pixel group PG2 beingthe compensation target, or at least one second pixel being thecompensation target.

According to the twelfth compensation scheme, a compensation target maybe the first region 121 and the second region 122. The memory 220 maystore information about a location of at least one group, at least onefirst pixel group PG1, or at least one first pixel being a compensationtarget of the first region 121, which is adjacent to the boundarybetween the first region 121 and the second region 122, or may storeinformation about a location of at least one group, at least one secondpixel group PG2, or at least one second pixel being a compensationtarget of the second region 122, which is adjacent to the boundarybetween the first region 121 and the second region 122.

The memory 220 may store at least one gain or offset value GN/OFFcorresponding to at least one group, at least one first pixel group PG1,or at least one first pixel being a compensation target of the firstregion 121, which is adjacent to the boundary between the first region121 and the second region 122, or may store at least one gain or offsetvalue GN/OFF corresponding to at least one group, at least one secondpixel group PG2, or at least one second pixel being a compensationtarget of the second region 122, which is adjacent to the boundarybetween the first region 121 and the second region 122.

In some example embodiments, the compensation schemes stored in thememory 220 may further include gains GN or offset values OFF accordingto gray scale values. For example, each of the first to twelfthcompensation schemes may include gains GN or offset values OFF accordingto a gray scale of a compensation unit adjacent to the boundary betweenthe first region 121 and the second region 122. Each of the first totwelfth compensation schemes may include gains GN and offset values OFFaccording to specific gray scale values. The compensation circuit 210may perform interpolation on gains GN, offset values OFF, and gray scalevalues associated with a gray scale of an image to be displayed in acompensation unit and may use a gain and an offset value obtainedthrough the interpolation for the purpose of performing compensation.

FIG. 7 illustrates an operating method of the compensation device 200according to some example embodiments of the inventive concepts. In someexample embodiments, an operating method of the compensation device 200may be understood to be an operating method of an electronic device 100that includes the compensation device 200. Referring to FIGS. 6 and 7 ,in operation S110, the compensation circuit 210 may receive the firstimage data ID1. In operation S120, the compensation circuit 210 maydetermine whether the first image data ID1 correspond to a compensationlocation. For example, when the first image data ID1 are image data tobe displayed through pixels including pixels present at the boundarybetween the first region 121 and the second region 122, the first imagedata ID1 may be determined as corresponding to the compensationlocation.

For example, the compensation circuit 210 may receive locationinformation of the first image data ID1 from the outside and maydetermine whether the first image data ID1 correspond to thecompensation location based on the location information. For anotherexample, the compensation circuit 210 may receive a control signalindicating that the first image data ID1 correspond to the compensationlocation from the outside.

When the first image data ID1 do not correspond to the compensationlocation, in operation S140, the compensation circuit 210 may output thefirst image data ID1 as the second image data ID2.

When the first image data ID1 correspond to the compensation location,in operation S130, the compensation circuit 210 may make compensationfor the first image data ID1 (e.g., compensate the first image data ID1)to generate the second image data ID2 and output the second image dataID2. In some example embodiments, the compensation circuit 210 maydifferently select compensation methods (e.g., to compensate the firstimage data) depending on (e.g., based on) placement patterns of the oneor more particular first pixel groups PG1 adjacent to the boundary 123and the one or more particular second pixel groups PG2 adjacent to theboundary 123.

As described with reference to the fifth block B5 and the sixth block B6of FIG. 3 , when the second pixel group PG2 is included in a specificregion adjacent to and/or including the boundary 123 between the firstregion 121 and the second region 122, for example, a regioncorresponding to the size of the hole group HG, the compensation circuit210 may generate the second image data ID2 from the first image data ID1such that brightness of each of the first pixel groups PG1 or brightnessof the second pixel group PG2 included in the specific region (alsoreferred to as one or more partial pixel groups of one or moreparticular first pixel groups PG1 that are adjacent to the boundary 123)further decreases as the number (e.g., quantity) of first pixel groupsPG1 included in the specific region increases. Restated, as a quantityof first pixel groups PG1 adjacent to the boundary 123 and included in aregion (e.g., B5 and/or B6) that includes one second pixel group PG2adjacent to the boundary 123, the compensation circuit 210 is configuredto generate the second image data ID2 based on compensating the firstimage data ID1 such that a brightness of light emitted by the firstpixel groups PG1 adjacent to the boundary and included in the regiondecreases, or a brightness of light emitted by the one second pixelgroup PG2 in the region decreases. It will be understood that, asdescribed herein, a brightness of a pixel and/or pixel group refers to abrightness of light emitted by the pixel and/or pixel group.

As described with reference to the third block B3 and the fourth blockB4 of FIG. 3 , when the second pixel group PG2 is not included in aspecific region adjacent to the boundary between the first region 121and the second region 122, for example, a region corresponding to thesize of the hole group HG, the compensation circuit 210 may generate thesecond image data ID2 from the first image data ID1 such that brightnessof each of the first pixel groups PG1 included in the specific region(also referred to as one or more partial pixel groups of one or moreparticular first pixel groups PG1 that are adjacent to the boundary 123)further increases. Restated, when one or more (or all) of the particularsecond pixel groups PG2 adjacent to the boundary 123 in the displaypanel 120 are not included in a region (e.g., B3 and/or B4) thatincludes at least one first pixel group PG1 that is adjacent to theboundary 123, when the quantity of first pixel groups in said regiondecreases, the compensation circuit is configured to generate the secondimage data ID2 based on compensating the first image data such that abrightness of light emitted by the at least one first pixel group PG1 inthe region increases.

As described with reference to the seventh block B7 and the eighth blockB8 of FIG. 5 , when pixels of the first region 121 and pixel holes ofthe second region 122 are adjacent to each other at the boundary 123between the first region 121 and the second region 122 (or when adistance of the pixels of the second region 122 from the boundary isgreater than a distance of the pixels of the first region 121 from theboundary), the compensation circuit 210 may decrease brightness of eachof the first pixels 121 a included in the seventh block B7 and theeighth block B8 (also referred to as one or more partial pixel groups ofone or more particular first pixel groups PG1 that are adjacent to theboundary 123).

As described with reference to the ninth block B9 and the tenth blockB10 of FIG. 5 , when pixels of the first region 121 and pixels of thesecond region 122 are adjacent to each other at the boundary between thefirst region 121 and the second region 122, the compensation circuit 210may decrease brightness of each of the first pixels 121 a included inthe ninth block B9 and the tenth block B10 (also referred to as one ormore partial pixel groups of one or more particular first pixel groupsPG1 that are adjacent to the boundary 123) and decrease brightness ofeach of the second pixels 122 a included in the ninth block B9 and thetenth block B10 (also referred to as one or more partial pixel groups ofone or more particular second pixel groups PG2 that are adjacent to theboundary 123).

In some example embodiments, for example with regard to the sevenththrough tenth blocks B7 to B10 collectively, the compensation circuit210 may generate second image data ID2 based on compensating the firstimage data ID1 such that a brightness of light emitted by first partialpixels (e.g., some or all) of one or more particular first pixel groupsPG1 adjacent to the boundary 123 (e.g., first pixels 121 a included inthe seventh and/or eighth blocks B7 and/or B8) increases and abrightness of light emitted by second partial pixels of the one or moreparticular first pixels groups PG1 adjacent to the boundary 123 (e.g.,first pixels 121 a included in the ninth and/or tenth blocks B9 and/orB10) decreases.

In some example embodiments, for example with regard to the sevenththrough tenth blocks B7 to B10 collectively, the compensation circuit210 may generate second image data ID2 based on compensating the firstimage data ID1 such that a brightness of light emitted by first partialpixels (e.g., some or all) of one or more particular second pixel groupsPG2 adjacent to the boundary 123 (e.g., second pixels 122 a included inthe tenth block B10) increases and a brightness of light emitted bysecond partial pixels of the one or more particular second pixel groupsPG2 adjacent to the boundary 123 (e.g., second pixels 122 a included inthe ninth block B9) decreases.

In some example embodiments, where one or more first pixel groups PG1(including one or more first pixel groups PG1 adjacent to the boundary123) include two or more first pixels 121 a, and one first pixel 121 aof the two or more first pixels 121 a is closest (e.g., most adjacent,or proximate) to the boundary 123 from among the two or more firstpixels 121 a of a first pixel group PG1 adjacent to the boundary 123,the compensation circuit 210 may generate second image data ID2 based oncompensating the first image data ID1 such that a brightness of lightemitted by the one first pixel 121 a that is closes to the boundary 123decreases (e.g., in relation to the brightness of light emitted by theother first pixels 121 a of the two or more first pixels 121 a includedin said first pixel group PG1 that is adjacent to the boundary 123.

As described above, the compensation circuit 210 may obtain acompensation unit, a compensation target, and compensation values fromthe information stored in the memory 220 and may generate the secondimage data ID2 from the first image data ID1 by adjusting brightness ofpixels based on the compensation unit, the compensation target, and thecompensation values.

The memory 220 may store information for making compensation for thebrightness difference described with reference to FIG. 3 and theunintended line(s) described with reference to FIG. 5 . The compensationcircuit 210 may make an image to be displayed through the display panel120 better by performing compensation based on the information stored inthe memory 220.

In operation S140, the compensation circuit 210 may output (e.g.,transmit) the second image data ID2 (e.g., to the display panel 120).Afterwards, the compensation circuit 210 may terminate the compensationfor the first image data ID1 received. When the first image data ID1 arefurther received, the compensation circuit 210 may further perform theoperations of FIG. 7 .

In some example embodiments, the operating method of an electronicdevice (e.g., electronic device 100) that includes a display panel(e.g., 120) according to FIG. 7 may include receiving first and secondimage data at S110, where the first image data corresponds to a firstregion 121 of first pixels 121 a of the display panel and the secondimage data corresponds to a second region 122 of second pixels 122 a ofthe display panel, displaying the first image data through one or morefirst pixel groups PG1 of the first region 121 at S120=NO and S140,performing compensation of the second image data to generate third imagedata at S120=YES and S130 (e.g., via any of the methods for generatingsecond image data ID2 based on compensating first image data ID1 asdescribed herein according to any of the example embodiments), anddisplaying said third image data through one or more second pixel groupsPG2 of the second region 122 at S140. In some example embodiments, theoperating method may further include capturing fourth image data throughthe second region 122 via a camera 190, which may occur before, after,or concurrently with any of the operations S110-S140 shown in FIG. 7 .Based on implementing an operation method according to any of theexample embodiments described herein (e.g., as shown in FIG. 7 andfurther as shown in FIGS. 10 and 11 ), operational performance of anelectronic device implementing the operation method may be improved(e.g., display performance may be improved based on said compensationwhile also enabling image capture through the second region of thedisplay panel, thereby enabling improved image capture performance ofthe electronic device).

FIG. 8 is a block diagram illustrating a display device 300 according tosome example embodiments of the inventive concepts. Referring to FIG. 8, the display device 300 according to some example embodiments of theinventive concepts may include a display panel 310, a gate driver block320, a data driver block 330, a sensing block 340, and a timing controlblock 350.

The display device 300 may correspond to, implement, be implemented by,and/or be included in the electronic device 100. The display panel 310may correspond to the display panel 120 of FIG. 1 . The display panel310 may include pixels PX. The pixels PX may be arranged in rows andcolumns. Rows of the pixels PX may be connected to the gate driver block320 through a first gate line GL1 and a second gate line GL2. Columns ofthe pixels PX may be connected to the data driver block 330 through datalines DL and may be connected to the sensing block 340 through sensinglines SL.

For a display operation, the pixels PX in each row may be selectedthrough the first gate line GL1. The pixels PX thus selected may adjustbrightness based on currents or voltages that are supplied through thedata lines DL. The pixels PX may adjust an image to be displayed to theoutside through a brightness control.

For a sensing operation, the pixels PX in each row may be selectedthrough the second gate line GL2. The pixels PX thus selected may outputpieces of information about present brightness through the sensing linesSL.

The gate driver block 320 may be connected to the pixels PX through thefirst gate lines GL1 and the second gate lines GL2. For example, thegate driver block 320 may be connected to one row of pixels PX throughone first gate line GL1 and one second gate line GL2.

The gate driver block 320 may adjust first gate voltages VG1 of thefirst gate lines GL1 and second gate voltages VG2 of the second gatelines GL2 in response to a first control signal CS1 output from thetiming control block 350. For example, under control of the timingcontrol block 350, the gate driver block 320 may adjust the first gatevoltage VG1 of one first gate line GL1 to a first on voltage.

The first on voltage may be used to select pixels of a row targeted forthe display operation. The gate driver block 320 may adjust the firstgate voltages VG1 of the remaining first gate lines GL1 to a first offvoltage in response to the first control signal CS1 output from thetiming control block 350. The first off voltage may be used to set thepixels PX of the remaining rows to a non-selection state in the displayoperation.

In response to the first control signal CS1 from the timing controlblock 350, the gate driver block 320 may select the first gate lines GL1sequentially once for the display operation during a time periodcorresponding to one frame of the second image data ID2.

The gate driver block 320 may adjust the second gate voltage VG2 of onesecond gate line GL2 to a second on voltage in response to the firstcontrol signal CS1 output from the timing control block 350. The secondon voltage may be used to select pixels of a row targeted for thesensing operation. Under control of the timing control block 350, thegate driver block 320 may adjust the second gate voltages VG2 of theremaining second gate lines GL2 to a second off voltage. The second offvoltage may be used to set the pixels PX of the remaining rows to anon-selection state in the sensing operation.

In response to the first control signal CS1 from the timing controlblock 350, the gate driver block 320 may select one or more second gatelines GL2 sequentially once for the sensing operation during a timeperiod corresponding to one frame of the second image data ID2.

The data driver block 330 may be connected to the pixels PX through thedata lines DL. For example, the data driver block 330 may be connectedto one column of pixels PX through one data line DL. The data driverblock 330 may receive third image data ID3 from the timing control block350. The third image data ID3 may be data that are identical to thesecond image data ID2 or are obtained by compensating, at the timingcontrol block 350, the second image data ID2.

The data driver block 330 may apply data voltages VD to the data linesDL, based on the third image data ID3. Each of the data voltages VD mayhave a level that is based on a portion of the third image data ID3(e.g., a gray level to be displayed through a relevant pixel). The datadriver block 330 may adjust brightness of the pixels PX of a selectedrow by using the data voltages VD.

The sensing block 340 may be connected to the pixels PX through thesensing lines SL. For example, the sensing block 340 may be connected toone column of pixels PX through the one sensing line SL. The sensingblock 340 may receive sensing voltages VS from the pixels PX of aselected row through the sensing lines SL in response to a secondcontrol signal CS2 from the timing control block 350. The sensing block340 may digitize the sensing voltages VS to generate sensing data DS.The sensing block 340 may provide the sensing data DS to the timingcontrol block 350.

The timing control block 350 may receive the second image data ID2 froman external host device (e.g., the compensation device 200). The timingcontrol block 350 may control the gate driver block 320 through thefirst control signal CS1 such that the gate driver block 320sequentially selects the rows of the pixels PX (e.g., through the firstgate line GL1 or the second gate line GL2).

The timing control block 350 may select a portion of the second imagedata ID2, which corresponds to the pixels PX of a selected row. Thetiming control block 350 may generate the third image data ID3 bycompensating data corresponding to the pixels PX of the selected rowbased on the degree of degradation of the pixels PX of the selected row.The timing control block 350 may adjust brightness of the pixels PX ofthe selected row based on the compensated third image data ID3, bytransmitting the third image data ID3 to the data driver block 330.

The timing control block 350 may further perform a sensing operation anda compensation operation. The sensing operation may refer to anoperation of sensing the degree of degradation of the pixels PX in thedisplay panel 310. For example, in the sensing operation, the timingcontrol block 350 may control the sensing block 340 through the secondcontrol signal CS2 such that the sensing block 340 detects brightness ofthe pixels PX. The timing control block 350 may receive informationabout the brightness of the pixels PX as the sensing data DS.

The timing control block 350 may compare original brightness (i.e.,brightness that the third image data ID3 indicate) to be displayedthrough the data driver block 330 and actual brightness (i.e.,brightness that the sensing data DS indicate) detected by the sensingblock 340 and may calculate brightness differences. The timing controlblock 350 may determine the brightness differences as the degrees ofdegradation of the pixels PX.

The timing control block 350 may perform the sensing operation on thepixels PX over two or more frames. For example, the timing control block350 may divide the columns of the pixels PX into two or more groups. Thetiming control block 350 may perform the sensing operation on one of thetwo or more groups after transmitting the third image data ID3corresponding to one frame to the pixels PX.

The compensation operation may refer to an operation of makingcompensation for levels (e.g., brightness values), through which thetiming control block 350 compensates the second image data ID2 to thethird image data ID3, based on the degrees of degradation of the pixelsPX. For example, the compensation operation may be performed after thesensing operation is completely performed on all the pixels PX.

The timing control block 350 may include the compensation device 200.The compensation device 200 may perform the compensation operation ofmaking compensation for the features described with reference to FIGS. 2and 3 and the features described with reference to FIGS. 4 and 5 . Also,the timing control block 350 may adjust the compensation operation,based on the sensing data DS.

In some example embodiments, the gate driver block 320, the data driverblock 330, the sensing block 340, and the timing control block 350 maybe manufactured in and/or implemented by one integrated circuit (e.g., adisplay driver integrated circuit (DDI)). For another example, the gatedriver block 320, the data driver block 330, and the sensing block 340may be manufactured in and/or implemented by one integrated circuit, andthe timing control block 350 may be manufactured in and/or implementedby another integrated circuit.

The display device 300 and/or any portions thereof (including, withoutlimitation, the gate driver block 320, the data driver block 330, thesensing block 340, and/or the timing control block 350) may include, maybe included in, and/or may be implemented by one or more instances ofprocessing circuitry such as hardware including logic circuits; ahardware/software combination such as a processor executing software; ora combination thereof. For example, the processing circuitry morespecifically may include, but is not limited to, a central processingunit (CPU), an arithmetic logic unit (ALU), a graphics processing unit(GPU), an application processor (AP), a digital signal processor (DSP),a microcomputer, a field programmable gate array (FPGA), andprogrammable logic unit, a microprocessor, application-specificintegrated circuit (ASIC), a neural network processing unit (NPU), anElectronic Control Unit (ECU), an Image Signal Processor (ISP), and thelike. In some example embodiments, the processing circuitry may includea non-transitory computer readable storage device, for example a solidstate drive, storing a program of instructions, and a processorconfigured to execute the program of instructions to implement thefunctionality and/or methods performed by some or all of the displaydevice 300, including the functionality and/or methods performed by someor all of the gate driver block 320, the data driver block 330, thesensing block 340, and the timing control block 350.

FIG. 9 is a circuit diagram illustrating a pixel PX according to someexample embodiments of the inventive concepts. Referring to FIGS. 8 and9 , the pixel PIX may include first to third switches S1 to S3, acapacitor “C”, and a diode “D”.

The first switch S1 may be connected between the data line DL and afirst node N1. The first switch S1 may operate in response to the firstgate voltage VG1 of the first gate line GL1. When the first gate voltageVG1 is the first on voltage, the first switch S1 may transfer the datavoltage VD of the data line DL to the first node N1.

The second switch S2 may be connected between a power node, to which apower supply voltage VDD is supplied, and a second node N2. The secondswitch S2 may operate in response to a voltage of the first node N1. Thecapacitor “C” is connected between the first node N1 and the second nodeN2. When the first gate voltage VG1 is the first on voltage, thecapacitor “C” may maintain a voltage difference of the first node N1 andthe second node N2 at the data voltage VD. The second switch S2 mayallow a current corresponding to the data voltage VD to flow from thepower node to the second node N2.

The diode “D” may be connected between the second node N2 and a groundnode to which a ground voltage VSS is supplied. The diode “D” mayreceive a current corresponding to the data voltage VD from the secondnode N2. The diode “D” may be an organic light-emitting diode (OLED)configured to emit a light, the brightness of which is proportional to acurrent flowing therethrough.

The third switch S3 is connected between the second node N2 and thesensing line SL. The third switch S3 may operate in response to thesecond gate voltage VG2 of the second gate line GL2. When the secondgate voltage VG2 is the second on voltage, the third switch S3 maytransfer a voltage, which is proportional to a current flowing throughthe second node N2, to the sensing line SL as the sensing voltage VS.

Some example embodiments is illustrated as the first to third switchesS1 to S3 are NMOS transistors. However, the first to third switches S1to S3 according to some example embodiments of the inventive conceptsare not limited to NMOS transistors. Also, the structure of the pixel PXillustrated in FIG. 9 is exemplified for better understanding of theinventive concepts and is not limited to the example illustrated in FIG.9 .

FIGS. 10 and 11 illustrate operating methods of the compensation device200 according to some example embodiments. FIG. 10 illustrates anexample in which the compensation device 200 performs compensation byusing the sensing data DS. Referring to FIGS. 6, 8, and 10 , inoperation S210, the compensation circuit 210 of the compensation device200 may receive deterioration information of the first region 121 andthe second region 122 from the timing control block 350. For example,the compensation circuit 210 may receive first region-related sensinginformation and second region-related sensing information of the sensingdata DS as deterioration information of the first region 121 (e.g.,first deterioration information of the first pixel groups PG1 of thefirst region 121) and deterioration information of the second region 122(e.g., second deterioration of the second pixel groups PG2 of the secondregion 122), respectively.

In operation S220, the compensation circuit 210 may adjust gains GN oroffsets OFF based on the deterioration information of the first region121 and the deterioration information of the second region 122. Thus,the compensation circuit 210 may generate the second image data ID2based on compensating the first image data ID1 based on said firstdeterioration information of the first pixel groups PG1 of the firstregion 121 and said second deterioration of the second pixel groups PG2of the second region 122.

Because the first pixels of the first region 121 and the second pixelsof the second region 122 are different in size and in brightness of thesame gray level, the aspect of deterioration of the first pixels of thefirst region 121 may be different from the aspect of deterioration ofthe second pixels of the second region 122. Also, as deteriorationprogresses, there may be a need to adjust gains GN or offsets OFF formaking compensation for pixels adjacent to the boundary between thefirst region 121 and the second region 122.

The memory 220 may store gains GN or offsets OFF according to thedegrees of deterioration of the first region 121 and the degrees ofdeterioration of the second region 122 in the form of a table. In someexample embodiments, the memory 220 may store a compensation function ofthe gains GN or the offsets OFF according to the degrees ofdeterioration of the first region 121 and the degrees of deteriorationof the second region 122. The compensation circuit 210 may select gainsGN or offsets OFF depending on the degree of degradation of the firstregion 121, the degree of degradation of the second region 122, and alocation of the first image data ID1 on the boundary and may apply theselected gains GN or the selected offsets OFF to the first image dataID1 to generate the second image data ID2.

In some example embodiments, the compensation circuit 210 may furtherperform compensation according to the degree of degradation of thepixels PX. The memory 220 may further store gains GN or offsets OFFaccording to the degree of deterioration of pixels PX that are notadjacent to the boundary between the first region 121 and the secondregion 122.

When the first image data ID1 do not correspond to the boundary betweenthe first region 121 and the second region 122, the compensation circuit210 may make compensation for gray levels of the first image data ID1based on the degree of degradation of the pixels PX and may generate thesecond image data ID2.

When the first image data ID1 correspond to the boundary between thefirst region 121 and the second region 122, the compensation circuit 210may make compensation for the gray levels of the first image data ID1based on the degree of degradation of the pixels PX and a location ofthe first image data ID1 on the boundary and may generate the secondimage data ID2.

In FIG. 8 , the description is given as the compensation device 200 isincluded in the timing control block 350. However, the compensationdevice 200 may be included in the data driver block 330. The timingcontrol block 350 may transfer the second image data ID2 as the thirdimage data ID3 to the data driver block 330. The timing control block350 may transfer the sensing data DS to the data driver block 330. Thedata driver block 330 may make compensation for gray levels of the thirdimage data ID3 based on the sensing data DS and may control the datavoltage VD of the data lines DL based on the compensated gray levels.

FIG. 11 illustrates an example in which the compensation device 200performs compensation based on information of image data. Referring toFIGS. 6 and 11 , in operation S310, the compensation circuit 210 mayreceive information of image data. For example, the information of theimage data may include complexity of an image to be displayed throughthe first image data ID1. Thus, said information of image data receivedat S310 may include information indicating a complexity of the firstimage data ID1.

In operation S320, the compensation circuit 210 may adjust acompensation unit. For example, as the complexity of the image becomeshigher, visibility of the features described with reference to FIGS. 2and 3 and the features described with reference to FIGS. 4 and 5 maydecrease. Accordingly, as the complexity of the image becomes higher,the compensation circuit 210 may increase the compensation unit.

For example, assuming that a default compensation unit of the firstimage data ID1 is a pixel, as the complexity of the image becomeshigher, the compensation circuit 210 may increase the compensation unitto a pixel group or a group. For another example, assuming that adefault compensation unit of the first image data ID1 is a pixel group,as the complexity of the image becomes higher, the compensation circuit210 may increase the compensation unit to a group. For another example,assuming that a default compensation unit of the first image data ID1 isa group, as the complexity of the image becomes higher, the compensationcircuit 210 may increase the number of pixel groups or pixels to beincluded in the group. Thus, for example, at S320, the compensationcircuit 210 may generate the second image data ID2 based on compensatingthe first image data ID1 based on the information indicating acomplexity of the first image data ID1 that is received at S310.

In some example embodiments, a gray level of an image to be displayedthrough pixels (e.g., the first pixels or the second pixels)corresponding to the boundary between the first region 121 and thesecond region 122 may correspond to a maximum value. When the gray levelof the image to be displayed corresponds to the maximum value,compensation causing an increase in the gray level of the image to bedisplayed through relevant pixels may not be permitted. For this reason,an unintended line may be displayed at the boundary between the firstregion 121 and the second region 122.

To prevent the above issue, the compensation circuit 210 may performprescale. For example, the compensation circuit 210 may decrease graylevels of an image to be displayed linearly based on a specific gain ora specific offset or non-linearly based on a look-up table LUT. Thelook-up table LUT may include adjustment values (e.g., gains or offsets)according to gray levels (or a range of gray levels). Afterwards, thecompensation circuit 210 may perform compensation on a prescale result.As gray levels decrease, it may be permitted for the compensationcircuit 210 to perform compensation such that gray levels increase,thereby improving display performance (e.g., displayed image quality) ofthe display panel 120, and thus improving performance of the electronicdevice 100.

FIG. 12 illustrates a display panel 120 a according to some exampleembodiments. Referring to FIGS. 1 and 12 , the second pixel groups PG2of the same pattern may be provided in a portion of the second region122, which is adjacent to the boundary 123 between the first region 121and the second region 122. For example, in the second pixel groups PG2,a first pattern 124 a of the second pixel groups PG2 adjacent to thefirst boundary 123 a (i.e., the left side), a second pattern 124 b ofthe second pixel groups PG2 adjacent to the second boundary 123 b (i.e.,the top side), a third pattern 124 c of the second pixel groups PG2adjacent to the third boundary 123 c (i.e., the right side), and afourth pattern 124 d of the second pixel groups PG2 adjacent to thefourth boundary 123 d (i.e., the bottom side) may be identical.

As shown in at least FIG. 12 , the second pixel groups PG2 adjacent tothe boundary may be spaced from the boundary 123 at least as much as alength corresponding to a width of each of the second pixel groups PG2.The holes “H” may be provided in the second region 122 so as to beadjacent to the boundary 123. The second pixel groups PG2 adjacent tothe boundary 123 have the same pattern except for four edge portions ofa quadrangular boundary 123. For example, there are always two of thefirst pixel groups PG1 adjacent to the boundary except for the four edgeportions of the quadrangular boundary 123. There are always three of thefirst pixel groups PG1 adjacent to the four edge portions of thequadrangular boundary 123. Accordingly, a size of a compensation unitfor making compensation for the features described with reference toFIGS. 2 and 3 and the features described with reference to FIGS. 4 and 5may become larger. As the size of the compensation unit becomes larger,the complexity of compensation and a demand for a storage space forgains GN or offsets OFF may decrease.

Also, placement patterns of the first pixel groups PG1 and the holes “H”of the four edge portions of the quadrangular boundary 123 may beidentical. Accordingly, the four edge portions may constitute onecompensation unit for processing. Accordingly, the complexity ofcompensation and a demand for a storage space for gains GN or offsetsOFF may decrease.

FIG. 13 illustrates a display panel 120 b according to some exampleembodiments. Referring to FIGS. 1 and 13 , the second pixel groups PG2of the same pattern may be provided in a portion of the second region122, which is adjacent to the boundary 123 between the first region 121and the second region 122. For example, in the second pixel groups PG2,a first pattern 124 a of the second pixel groups PG2 adjacent to thefirst boundary 123 a (i.e., the left side), a second pattern 124 b ofthe second pixel groups PG2 adjacent to the second boundary 123 b (i.e.,the top side), a third pattern 124 c of the second pixel groups PG2adjacent to the third boundary 123 c (i.e., the right side), and afourth pattern 124 d of the second pixel groups PG2 adjacent to thefourth boundary 123 d (i.e., the bottom side) may be identical.

As shown in at least FIG. 13 , the second pixel groups PG2 adjacent tothe boundary 123 may be spaced from each other at least as much as alength corresponding to a width of each of the second pixel groups PG2adjacent to the boundary 123. For example, the holes “H” and the secondpixel groups PG2 may be alternately provided in the second region 122 soas to be adjacent to the boundary 123. The second pixel groups PG2adjacent to the boundary 123 have the same pattern except for four edgeportions of a quadrangular boundary 123. For example, there are alwaystwo of the first pixel groups PG1 and one of the second pixel groups PG2adjacent to the boundary 123 except for the four edge portions of thequadrangular boundary 123. There are always three of the first pixelgroups PG1 and one of the second pixel groups PG2 adjacent to the fouredge portions of the quadrangular boundary 123. Accordingly, a size of acompensation unit for making compensation for the features describedwith reference to FIGS. 2 and 3 and the features described withreference to FIGS. 4 and 5 may become larger. As the size of thecompensation unit becomes larger, the complexity of compensation and ademand for a storage space for gains GN or offsets OFF may decrease.

Also, placement patterns of the first pixel groups PG1 and the secondpixel groups PG2 of the four corner portions of the quadrangularboundary are identical. Accordingly, the four edge portions mayconstitute one compensation unit for processing. Accordingly, thecomplexity of compensation and a demand for a storage space for gains GNor offsets OFF may decrease.

In some example embodiments, the description is given as the secondregion 122 is in the shape of a quadrangle. However, the shape of thesecond region 122 is not limited to the quadrangle. The second region122 may be implemented in one of various polygons such as a hexagon andan octagon. The technical idea of the inventive concepts may be appliedto the boundary 123 between the first region 121 and the second region122, thus reducing or preventing an unintended line from being displayedat the boundary 123, thereby improving the quality of image data (e.g.,images) displayed by the display panel 120 and thus improving thedisplay performance of an electronic device 100 including said displaypanel 120 implementing an under display camera (e.g., camera 190) underthe second region 122, wherein the second region 122 providestransparency to enable image data capture by the under display camerawithout deterioration of a display of an image across the first region121, the second region 122, and/or the boundary 123 between the firstand second regions 121 and 122 (thereby enabling improved displayperformance and image capture performance of the electronic device 100).

FIG. 14 is a block diagram illustrating an electronic device 1000according to some example embodiments of the inventive concepts. Theelectronic device 1000 may correspond to the electronic device 100 ofFIG. 1 . Referring to FIG. 14 , the electronic device 1000 may include amain processor 1100, a touch panel 1200, a touch driver integratedcircuit (TDI) 1202, a display panel 1300, a display driver integratedcircuit (DDI) 1302, a system memory 1400, a storage device 1500, anaudio processor 1600, a communication block 1700, an image processor1800, and a user interface 1900. In some example embodiments, theelectronic device 1000 may be one of various electronic devices such asa personal computer, a laptop computer, a workstation, a portablecommunication terminal, a personal digital assistant (PDA), a portablemedia player (PMP), a digital camera, a smartphone, a tablet computer,and a wearable device.

The electronic device 1000 and/or any portions thereof (including,without limitation, main processor 1100) may include, may be includedin, and/or may be implemented by one or more instances of processingcircuitry such as hardware including logic circuits; a hardware/softwarecombination such as a processor executing software; or a combinationthereof. For example, the processing circuitry more specifically mayinclude, but is not limited to, a central processing unit (CPU), anarithmetic logic unit (ALU), a graphics processing unit (GPU), anapplication processor (AP), a digital signal processor (DSP), amicrocomputer, a field programmable gate array (FPGA), and programmablelogic unit, a microprocessor, application-specific integrated circuit(ASIC), a neural network processing unit (NPU), an Electronic ControlUnit (ECU), an Image Signal Processor (ISP), and the like. In someexample embodiments, the processing circuitry may include anon-transitory computer readable storage device, for example a solidstate drive (e.g., system memory 1400), storing a program ofinstructions, and a processor configured to execute the program ofinstructions to implement the functionality and/or methods performed bysome or all of the electronic device 1000.

The main processor 1100 may control overall operations of the electronicdevice 1000. The main processor 1100 may control/manage operations ofthe components of the electronic device 1000. The main processor 1100may process various operations for the purpose of operating theelectronic device 1000. The touch panel 1200 may be configured to sensea touch input from a user under control of the touch driver integratedcircuit 1202. The display panel 1300 may be configured to display imageinformation under control of the display driver integrated circuit 1302.

The display panel 1300 may correspond to the display panel 120 of FIG. 1and the display panel 310 of FIG. 8 . The display driver integratedcircuit 1302 may include the gate driver block 320, the data driverblock 330, the sensing block 340, and the timing control block 350 ofFIG. 8 .

In FIG. 8 , the description is given as the compensation device 200 isprovided in the display driver integrated circuit 1302. However, thecompensation device 200 may be provided in the main processor 1100. Inthis case, the display driver integrated circuit 1302, for example, thetiming control block 350 may provide the main processor 1100 with thesensing data DS or information obtained by processing the sensing dataDS, as degradation information. The compensation device 200 of the mainprocessor 1100 may perform compensation for image data to be displayedthrough the display panel 1300 and may output image data being acompensation result to the display driver integrated circuit 1302. As aresult of said compensation, the quality of image data (e.g., images)displayed through the display panel 1300 may be improved (e.g., toremove unintended lines from being displayed at the boundary 123 betweenfirst and second regions 121 and 122) in the display panel 1300, therebyimproving the quality of image data (e.g., images) displayed by thedisplay panel 1300, for example when the display panel 1300 implementsan under display camera (UDC), such that both display performance andimage capture performance of the electronic device 1000 may be improved(e.g., based on enabling image capture by an under display camera undera second region of the display panel 1300 while reducing or preventingreduction in displayed image quality of images displayed by the displaypanel 1300 at least at a boundary between the first and second regionsof the display panel 1300).

The system memory 1400 may store data that are used for an operation ofthe electronic device 1000. For example, the system memory 1400 mayinclude a volatile memory such as a static random access memory (SRAM),a dynamic RAM (DRAM), or a synchronous DRAM (SDRAM), and/or anonvolatile memory such as a phase-change RAM (PRAM), amagneto-resistive RAM (MRAM), a resistive RAM (ReRAM), or aferroelectric RAM (FRAM).

The storage device 1500 may store data regardless of whether a power issupplied. For example, the storage device 1500 may include at least oneof various nonvolatile memories such as a flash memory, a PRAM, an MRAM,a ReRAM, and/or a FRAM. For example, the storage device 1500 may includean embedded memory and/or a removable memory of the electronic device1000.

The audio processor 1600 may process an audio signal by using an audiosignal processor 1610. The audio processor 1600 may receive an audioinput through a microphone 1620 or may provide an audio output through aspeaker 1630. The communication block 1700 may exchange signals with anexternal device/system through an antenna 1710. A transceiver 1720 and amodulator/demodulator (MODEM) 1730 of the communication block 1700 mayprocess signals exchanged with the external device/system, based on atleast one of various wireless communication protocols: long termevolution (LTE), worldwide interoperability for microwave access(WiMax), global system for mobile communication (GSM), code divisionmultiple access (CDMA), Bluetooth, near field communication (NFC),wireless fidelity (Wi-Fi), or radio frequency identification (RFID).

The image processor 1800 (e.g., a camera, which may correspond to camera190) may receive a light through a lens 1810. An image device 1820(e.g., image sensor, such as a CMOS image sensor) and an image signalprocessor (ISP) 1830 included in the image processor 1800 may generateimage information about an external object, based on a received light.The user interface 1900 may include an interface capable of exchangeinformation with a user, except for the touch panel 1200, the displaypanel 1300, the audio processor 1600, and the image processor 1800. Theuser interface 1900 may include a keyboard, a mouse, a printer, aprojector, various sensors, a human body communication device, etc.

The electronic device 1000 may further include a power managementintegrated circuit (IC) (PMIC) 1010, a battery 1020, and a powerconnector 1030. The power management IC 1010 may generate an interfacepower from a power supplied from the battery 1020 or a power suppliedfrom the power connector 1030, and may provide the internal power to themain processor 1100, the touch panel 1200, the touch driver integratedcircuit 1202, the display panel 1300, the display driver integratedcircuit 1302, the system memory 1400, the storage device 1500, the audioprocessor 1600, the communication block 1700, the image processor 1800,and the user interface 1900.

In the above example embodiments, components according to the inventiveconcepts are described by using the terms “first”, “second”, “third”,and the like. However, the terms “first”, “second”, “third”, and thelike may be used to distinguish components from each other and do notlimit the inventive concepts. For example, the terms “first”, “second”,“third”, and the like do not involve an order or a numerical meaning ofany form.

In the above example embodiments, components according to some exampleembodiments of the inventive concepts are described by using blocks. Theblocks may be implemented with various hardware devices, such as anintegrated circuit, an application specific IC (ASCI), a fieldprogrammable gate array (FPGA), and a complex programmable logic device(CPLD), firmware driven in hardware devices, software such as anapplication, or a combination of a hardware device and software. Also,the blocks may include circuits implemented with semiconductor elementsin an integrated circuit or circuits enrolled as intellectual property(IP).

According to the inventive concepts, image data to be displayed at theboundary between a first region and a second region may be compensatedfor depending on a location of the image data on the boundary betweenthe first region and the second region. An electronic device mitigatingreduction in image quality at the boundary between the first region andthe second region, or preventing an image quality from being reduced atthe boundary between the first region and the second region, (and thusproviding improved display performance of said electronic device,including improved quality of image data and/or images displayed by adisplay panel of said electronic device, and also enabling transparencyof the second region to enable operation of an under display cameraunder the second region of the display panel) and an operating method ofthe electronic device are provided.

While the inventive concepts has been described with reference toexample embodiments thereof, it will be apparent to those of ordinaryskill in the art that various changes and modifications may be madethereto without departing from the spirit and scope of the inventiveconcepts as set forth in the following claims.

What is claimed is:
 1. An electronic device, comprising: a display panelincluding a plurality of pixel groups placed on a first region and asecond region; and a control circuit configured to receive first imagedata, generate second image data by adjusting gray values of the firstimage data corresponding to one or more pixel groups, wherein the one ormore pixel groups are adjacent to a boundary between the first regionand the second region, and output the second image data to the displaypanel.
 2. The electronic device of claim 1, wherein the second imagedata is compensated first image data.
 3. The electronic device of claim1, wherein the control circuit is configured to select an adjustingmethod among a plurality of adjusting methods.
 4. The electronic deviceof claim 3, wherein the control circuit is configured to select theadjusting method based on a location of each of the one or more pixelgroups.
 5. The electronic device of claim 3, wherein the control circuitis configured to select the adjusting method based on a placementdensity of adjacent pixel groups of the one or more pixel groups.
 6. Theelectronic device of claim 3, wherein the plurality of adjusting methodsincludes: increasing gray values of a pixel group of the one or morepixel groups; and decreasing the gray values of the pixel group of theone or more pixel groups.
 7. The electronic device of claim 1, wherein,a pixel group in the second region is configured to emit light at ahigher brightness than light emitted by a pixel group in the firstregion based on a same gray values.
 8. The electronic device of claim 7,wherein the first region surrounds the second region.
 9. The electronicdevice of claim 7, further comprising: a camera configured to capturethird image data through the second region.
 10. The electronic device ofclaim 7, wherein a placement density of pixel groups of the first regionis higher than a placement density of pixel groups of the second region.11. The electronic device of claim 1, wherein the control circuit isconfigured to adjust the gray values of the one or more pixel groupsbased on gains and offsets.
 12. An electronic device, comprising: adisplay panel including a plurality of pixel groups placed on a firstregion and a second region; and a control circuit configured to receivefirst image data, identify at least a portion of the first image datacorresponding to one or more pixel groups, which are adjacent to aboundary between the first region and the second region, generate secondimage data by adjusting gray values of the at least the portion of thefirst image data, and output the second image data to the display panel.13. The electronic device of claim 12, wherein the control circuit isfurther configured to output the first image data to the display panelif the first image data do not correspond to the one or more pixelgroups.
 14. The electronic device of claim 12, wherein the controlcircuit is configured to select an adjusting method among a plurality ofadjusting methods.
 15. The electronic device of claim 14, wherein theplurality of adjusting methods includes: increasing gray values of apixel group of the one or more pixel groups; and decreasing the grayvalues of the pixel group of the one or more pixel groups.
 16. Theelectronic device of claim 14, wherein the control circuit is configuredto select the adjusting method based on a location of each of the one ormore pixel groups.
 17. The electronic device of claim 14, wherein thecontrol circuit is configured to select the adjusting method based on aplacement density of adjacent pixel groups of the one or more pixelgroups.
 18. The electronic device of claim 12, wherein the controlcircuit is configured to adjust the gray values such that a brightnessof light emitted by at least one of the one or more pixel groups in thefirst region increases, and a brightness of light emitted by at leastone the one or more pixel groups in the second region decreases.
 19. Theelectronic device of claim 12, wherein the control circuit is configuredto adjust the gray values such that a brightness of light emitted by atleast one of the one or more pixel groups in the second regionincreases, and a brightness of light emitted by at least one of the oneor more pixel groups in the first region decreases.
 20. An electronicdevice, comprising: a display panel including a plurality of pixelgroups placed on a first region and a second region; and a controlcircuit, wherein the control circuit is configured to receive first grayvalues corresponding to a pixel group, generate second gray values byadjusting the first gray values when the pixel group corresponds to oneor more pixel groups, which are adjacent to a boundary between the firstregion and the second region, and output the second gray values to thedisplay panel.